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Method for reducing harmonic waves of power network generator

A generator and harmonic technology, applied in the AC network to reduce harmonics/ripple, harmonic reduction devices, magnetic circuit shape/style/structure, etc., can solve the problem of high harmonic content, affecting power grid safety and normal use Electricity and other issues to achieve the effect of improving safety factor, improving power supply quality, and reducing operating losses

Inactive Publication Date: 2016-01-06
DONGYING POWER SUPPLY COMPANY STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the harmonic content in the generator potential is extremely high, which seriously affects the safety and normal power consumption of the power grid. Since there is no suitable method to suppress the harmonics, this phenomenon is intensified.

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0005] First change the shape of the pole piece of the pole or the distribution range of the excitation winding to make the distribution of the magnetic field of the pole close to the sinusoidal waveform, then use the Y connection method to eliminate the sub-harmonic of 3 in the potential, and then use the short-distance winding to weaken the high-order harmonic potential, and finally use distributed windings to weaken the high-order harmonic potential.

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Abstract

The invention provides a method for reducing harmonic waves of a power network generator to improve power supply quality. According to the technical scheme, firstly, the pole shoe shape of a magnetic pole or the distribution range of an exciting winding is changed, so that distribution of a magnetic field of the magnetic pole is similar to a sinusoidal waveform; secondly, multiple harmonic waves of 3 in potential are removed by a Y connection method; thirdly, high harmonic potential is weakened by a short-pitch winding; and finally, the high harmonic potential is weakened by a distributed winding. The method has the beneficial effects that generation of the harmonic waves is completely suppressed; and a security coefficient of power supply is improved, so that operating losses of a power network are reduced; and the power supply quality is improved.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a method for reducing harmonics of power grid generators. Background technique [0002] At present, the harmonic content in the generator potential is extremely high, which seriously affects the safety and normal power consumption of the power grid. Since there is no suitable method to suppress the harmonics, this phenomenon is intensified. Contents of the invention [0003] The purpose of the present invention is to provide a method for reducing the harmonics of power grid generators to improve the quality of power supply in view of the defects in the prior art. The technical solution is: first change the shape of the pole shoe of the magnetic pole or the distribution range of the excitation winding, so that the distribution of the magnetic field of the magnetic pole is close to the sinusoidal waveform, and then use the Y connection method to eliminate the sub-harmonic of...

Claims

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Application Information

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IPC IPC(8): H02J3/01H02K1/06
CPCY02E40/40
Inventor 田野盖帅商同刚宋彦清缪荣真祁洪凯
Owner DONGYING POWER SUPPLY COMPANY STATE GRID SHANDONG ELECTRIC POWER
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